Eristalis obscura Loew, 1866, is Holarctic in distribution and E. pseudorupium Kanervo, 1938 and£. beltrami Telford, 1970 are junior synonyms of it. E. obscura shows a great morphological variation of the superior lobe in the male genitalia, which is documented by illustrations. The distinguishing characters of E. obscura and other similar species are briefly discussed. The male genitalia of E....

In the present paper, we described the first record of an epibiont protozoan Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus Thatcher and Brasil-Sato, 2008, parasite of Pimelodus maculatus Lacépède, 1803 in Brazil, with electron microscope observations. Fish were collected in Veados River, state of São Paulo and the crustacean Ergasilus chelangulatus ...

1 Johns Hopkins School of Medicine, 1830 Monument Street, Suite 2-300, Baltimore, Maryland, 21205, USA 2 John van Geest Centre for Brain Repair, University of Cambridge, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, UK 3 Section of Retinal Ganglion Cell Biology, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, 6 Center Drive,...

New genus Neoethillagen. n., is described to include two New World nominal species formerly recognized as valid species in Winthemia Robineau-Desvoidy: Exorista ignobilis van der Wulp and Winthemia antennalis Coquillett. Winthemia antennalis is proposed as a junior synonym of Exorista ignobilissyn. n.Neoethilla ignobiliscomb. n. is removed from the Winthemiini and placed in the tribe Ethillini ...

Fannia Robineau-Desvoidy is a genus of calyptrate Diptera that comprises 89 Neotropical species, of which only 23 occur in Colombia. Based on male characters (including terminalia), two new species from the Department of Antioquia (Fannia colazorrensis sp. nov. and Fannia laclara sp. nov.) are described. Illustrations of the male are presented.

1 Johns Hopkins School of Medicine, 1830 Monument Street, Suite 2-300, Baltimore, Maryland, 21205, USA 2 John van Geest Centre for Brain Repair, University of Cambridge, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, UK 3 Section of Retinal Ganglion Cell Biology, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, 6 Center Drive,...

Grisel's syndrome is a rare but well-documented clinical entity. It is a nontraumatic, fixed rotary subluxation of C1 on C2 (atlantoaxial). Although first described in 1830, the exact mechanism of Grisel's syndrome remains unclear. We present a postoperative case of Grisel's syndrome and an extensive literature review, and we propose a mechanism for its pathogenesis. In addition, we propose a t...

A comparison of climatic data for the eastern United States from the 1830’s and 1840’s with the currently valid climatic normals indicates a distinctly cooler and, in some areas, wetter climate in the first half of the last century. The recently appearing trend to cooler conditions noticed here and elsewhere could be indicative of a return to the climatic character of those earlier years.

A checklist of the 39 species of blow flies (Calliphoridae and Mesembrinellidae) so far known to occur in Venezuela is provided, based on a thorough literature review and the examination of ca. 500 specimens deposited in the main entomological collections of the country. Data from the literature and museum collections were used to generate distribution maps for 37 species. Three species are rec...

Integral transforms play an important rôle in Analytic number theory, the part of Number theory where problems of a number-theoretic nature are solved by the use of various methods from Analysis. The most common integral transforms that are used are: Mellin transforms (Robert Hjalmar Mellin, 18541933), Laplace transforms (Pierre-Simon, marquis de Laplace, 1749-1827) and Fourier transforms (Jose...